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 Post subject: Raid hard disks cloning
PostPosted: June 11th, 2018, 10:59 
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Joined: January 12th, 2016, 3:46
Posts: 28
Location: India
Hi all
I am getting a raid recovery case & I am super excited for the same.
My first task will be to image all hard disks ( 1tb each)
I would like to know which tool I must to use for imaging. Though most of the softwares support disk cloning , I will prefer which will be most suitable.
Can someone share there experience


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 11th, 2018, 11:04 
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Joined: February 9th, 2009, 16:13
Posts: 2019
Location: Ontario, Canada
Generally speaking, if you are getting a paid data recovery case, you should already have the tools, knowledge and experience to handle the project before accepting the job or attempting the recovery. Is the client aware of this?

Without knowing more, my best advice is to outsource the recovery to a reputable data recovery lab in your region. When all is done and the client has their recovered files back, ask if you keep the original drives and then try to learn how to do data recovery.

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 Post subject: Re: Raid hard disks cloning
PostPosted: June 11th, 2018, 11:05 
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Joined: October 16th, 2013, 13:21
Posts: 618
Location: Brazil
Well, you do not state if it is just a logical recover or if the disks are failing.

Lacking a hardware imager, the usual recommended tools would be hddsuperclone and ddrescue.

Just be sure to identify correctly the disk order and corresponding images. If you receive the raid machine/enclosure/appliance complete, better, then label all of the things and their positions. Take pictures when possible. That can help you later if some difficulties arise.


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 12th, 2018, 1:58 
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Joined: January 12th, 2016, 3:46
Posts: 28
Location: India
Hi Thanks both of you for responding.

lcoughey --- I will be handling the case most professionally , that's the reason I will be imaging disks first. Unless I do study / R & D myself how can I learn
I will be ensuring that not a bit is written on originals disks and they are kept as it is.
rogfanther - Thanks for suggestion ,unfortunately disks have been removed and some other recovery company has tried and are failed.
I have informed customer how to handle hard disks and must mark / label no. and order before removing.
Don't know in which conditions disks will come. All hard disks in raid 5 array are working , so no failed disk as such.


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 12th, 2018, 8:30 
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Joined: October 16th, 2013, 13:21
Posts: 618
Location: Brazil
Ok. IMHO, if disks have already been worked on by another company and data is important, you really should send this case to a more experienced company. You could , for an example, clone the disks before sending them to the other cmpany, then you can study with them and compare your results to those of the other company.

If data is not that important, then I believe you may have some harder time learning from this case, as the situation may have been made worse by other people changing it, and even the order of disks / type of raid can present problems to identify. It can be solved, yes, but for learning it would be better to have a cleaner case to begin with.


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 14th, 2018, 4:01 
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Joined: January 12th, 2016, 3:46
Posts: 28
Location: India
I haven't got disks yet .I have decided to clone them using hddsuperclone and give recovery a try before giving up.


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 14th, 2018, 9:11 
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Joined: October 16th, 2013, 13:21
Posts: 618
Location: Brazil
While you wait for the disks, maybe try contacting @Amarbir from this forum. He is from India also, and may give you some suggestions. Or maybe you can arrange to outsource the original drives to him, while you try your luck with the clones. They you get to learn, and the customer doesn´t have to wait too long for the recovery of the data ( that is, if the data is recoverable, etc etc )


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 14th, 2018, 9:41 
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Joined: May 21st, 2007, 16:10
Posts: 1484
Location: Gothenburg/ Sweden
posidon wrote:
Unless I do study / R & D myself how can I learn You should not study on clients cases
I will be ensuring that not a bit is written on originals disks and they are kept as it is.Write to the disks is not the only problem that can happen, they also fail from time to time you know

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Rescue IT Dataräddning Göteborg AB
http://www.rescue-it.se


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 15th, 2018, 7:37 
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Joined: January 12th, 2016, 3:46
Posts: 28
Location: India
I am wondering whether forum is for Encouraging or discouraging :?
No matter everyone tried to generate fears and doubt about my technical skills , actually it is making me stronger and I am determined to beat discourager gang 8) , now while I am waiting for disks to arrive I am really amused and enjoying reading all discouraging posts and laughing.
Possibly they have forgotten that with determination and strong will power one can do miracles.
Provided that raid is not disturbed and degraded , I am sure I will recover data. In case I need help I know whom to contact ( Dr. Kiev)


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 15th, 2018, 9:02 
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Joined: March 19th, 2015, 15:01
Posts: 1379
Location: isreal
posidon wrote:
I am wondering whether forum is for Encouraging or discouraging :?

I'm sorry
the first rule "you" should have is "not to gamble with someone else's data"
it is crystal clear - from reading the thread - that you're lacking the appropriate skills knowledge and tools to handle that case
so... with all due respect, you can get all the help needed when we are talking about your data but not when involved others
sorry for being the messenger to deliver the truth as it is


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 15th, 2018, 11:39 
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Joined: October 16th, 2013, 13:21
Posts: 618
Location: Brazil
jermy wrote:
posidon wrote:
I am wondering whether forum is for Encouraging or discouraging :?

I'm sorry
the first rule "you" should have is "not to gamble with someone else's data"
it is crystal clear - from reading the thread - that you're lacking the appropriate skills knowledge and tools to handle that case
so... with all due respect, you can get all the help needed when we are talking about your data but not when involved others
sorry for being the messenger to deliver the truth as it is


+1

As to the OP : nobody in the thread discouraged you. Every post tried to suggest the correct ways to approach this, to ensure at the same time client data is preserved/recovered and you have a chance to learn.

And if the objective is to learn something about RAID recovery, there is a simple and effective way : build a raid with some disks of yours, fill it with some data, then disconnect and mix the disks. Then approach it without using information you already had, and try to identify disk order and rearrange images. Way more effective than trying your luck in something that someone already worked, that you don´t know what was the problem, and where disks may have physical problems alongside the logical ones.

To make the experience better, get a friend to build the raid for you, and ask for them to not tell you about the chosen parameters ( raid type, disk order, etc ) . Then get just a bunch of disks with no order marking. When you can recover somewhat easily from a couple tests like this, you can start to build more complex experiments to keep learning and doing R&D.


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 15th, 2018, 13:48 
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Joined: February 9th, 2009, 16:13
Posts: 2019
Location: Ontario, Canada
Pehaps a good measure of things would be, is your client okay with you using their drives to learn? If they were to be reading this thread, right now, would they be okay with it? If they are fully aware of the risks, then go for it.

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Luke
RAID Data Recovery


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 15th, 2018, 14:09 
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Joined: January 8th, 2008, 5:21
Posts: 830
Location: uk
posidon wrote:
Hi Thanks both of you for responding.

lcoughey --- I will be handling the case most professionally , that's the reason I will be imaging disks first. Unless I do study / R & D myself how can I learn
I will be ensuring that not a bit is written on originals disks and they are kept as it is.
rogfanther - Thanks for suggestion ,unfortunately disks have been removed and some other recovery company has tried and are failed.
I have informed customer how to handle hard disks and must mark / label no. and order before removing.
Don't know in which conditions disks will come. All hard disks in raid 5 array are working , so no failed disk as such.

How do you know it is a raid 5?
There are many possible configurations and it might not be a raid 5.
Sorry to say it but if you say the other data recovery company has tried and failed and you have no prior experience of working with raid so under these circumstances you will probably fail as well.
Just make sure you create those images!
How many drives in the 'raid'?
What device have the drives been removed from or attached to?


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 Post subject: Re: Raid hard disks cloning
PostPosted: June 15th, 2018, 16:40 
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Joined: June 11th, 2013, 17:01
Posts: 900
Location: USA
OMG :cry: :cry: :cry:

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 Post subject: Re: Raid hard disks cloning
PostPosted: June 16th, 2018, 10:57 
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Joined: January 12th, 2016, 3:46
Posts: 28
Location: India
dick wrote:
posidon wrote:
Hi Thanks both of you for responding.

lcoughey --- I will be handling the case most professionally , that's the reason I will be imaging disks first. Unless I do study / R & D myself how can I learn
I will be ensuring that not a bit is written on originals disks and they are kept as it is.
rogfanther - Thanks for suggestion ,unfortunately disks have been removed and some other recovery company has tried and are failed.
I have informed customer how to handle hard disks and must mark / label no. and order before removing.
Don't know in which conditions disks will come. All hard disks in raid 5 array are working , so no failed disk as such.

How do you know it is a raid 5?
There are many possible configurations and it might not be a raid 5.
Sorry to say it but if you say the other data recovery company has tried and failed and you have no prior experience of working with raid so under these circumstances you will probably fail as well.
Just make sure you create those images!
How many drives in the 'raid'?
What device have the drives been removed from or attached to?



Hi All friends , Thanks for your valuable suggestion. Appreciate all the Help
I am seriously studying concerns expressed as you are having experience of handling such cases.
Most important is question raised by dick - How do you know it is a raid 5 -- I don't have answer for this with other vital information like disk order , nor customer is having technical knowledge of the same.
array has 4 disks . Imaging is currently running with very low speed ( 35 Mb/s).

Disks are from assembled server .


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